<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>实训2</title>
<script type="text/javascript" src="training1.js">
</script>
</head>

<body>
<h2>网页主要由三部分组成</h2>
<h4>
  <ul>
    <li>结构</li>
    <li>表现</li>
    <li>行为</li>
  </ul>
</h4>
</body>
</html>
